Juan Manuel de Ayala y Aranza was a Spanish Navy officer who played a significant role in the European exploration of California, as he and the crew of his ship San Carlos were the first Europeans known to have entered the San Francisco Bay, having sailed there from the Port of San Blas, Nayarit, Mexico.
- Occupation
- explorer, military personnel
- Citizenship
- Spain
- Born
- December 28, 1745
- Died
- December 30, 1797
